JP6706466B2 - Artificial tooth making device - Google Patents

Description

The present invention relates to an artificial tooth manufacturing device for manufacturing artificial teeth.

2. Description of the Related Art Conventionally, there has been known an artificial tooth manufacturing apparatus that manufactures an artificial tooth by cutting a ceramic material, a resin material, or the like into a desired shape.

Such an artificial tooth manufacturing device has a housing. A processing area is provided in this housing (for example, refer to Patent Document 1). In the processing area, the workpiece is held by the holding portion, and cutting is performed by the processing tool detachably provided on the spindle.

JP, 2013-121466, A

By the way, the spindle of the artificial tooth manufacturing apparatus needs to be replaced depending on its life after being used for a certain period. For example, a heavy user often replaces the spindle in less than a year. Thus, despite the frequent replacement work of the spindle, there has been a situation in which an artificial tooth manufacturing apparatus capable of easily performing the replacement work of the spindle has not been developed. On the other hand, a service person can perform the spindle replacement work, but in that case, there is a problem that the work cost becomes high.

The present invention has been made in view of the above points, and an object of the present invention is to provide an artificial tooth manufacturing apparatus capable of easily inspecting and exchanging a cutting drive unit at low cost.

An artificial tooth manufacturing apparatus according to the present invention is an artificial tooth manufacturing apparatus that cuts a workpiece to manufacture an artificial tooth, and is provided with a case having a front opening and a front opening of the case for opening and closing the opening. A front cover which is freely openable and closable by closing the opening and having a space behind the opening of the case as a processing area, a holding portion which is provided in the processing area and holds a workpiece, and a holding portion in the case. Between a partition wall that is provided above the partition wall and has an insertion hole that penetrates vertically, a first position that forms a closed storage area together with the partition wall, and a second position that opens the closed storage area. A maintenance cover rotatably provided with the cutting drive unit, a cutting drive unit provided in the storage area, and a processing tool connected to the cutting drive unit and arranged in the processing area through the insertion hole.

In the artificial tooth manufacturing device according to the present invention, by rotating the maintenance cover toward the second position, the storage area where the cutting drive unit such as the spindle is provided can be opened. This allows the operator to easily access the storage area. As a result, it is possible to easily inspect and replace the cutting drive unit without incurring cost and requesting a service person. In the conventional artificial tooth manufacturing device, the cover that covers the inside of the machine body is opened to access the cutting drive unit. Can also be accessed. This is not the case with the present invention. Further, the storage area can be partitioned from the processing area by the maintenance cover and the partition wall. As a result, it is possible to prevent chips generated during cutting from entering the cutting drive unit.

According to a preferred aspect of the present invention, the first left rotation shaft rotatably connected to the upper left part of the case and the left end portion of the front cover are connected to rotatably support the front cover. A left support member having a second left rotation shaft, a first right rotation shaft rotatably connected to an upper right portion of the case, and a right end portion of the front cover, which are provided together with the left support member. A right support member having a second right rotation shaft that rotatably supports the front cover, and the front cover has a third position for opening an opening of the case by the left support member and the right support member. And a fourth position that closes the opening, and when the maintenance cover is closed, the front cover moves from the third position to the fourth position without interfering with the maintenance cover. When the left and right support members are configured to rotate and the maintenance cover is opened forward, the rear surface of the front cover contacts the front end of the maintenance cover during the rotation of the left support member and the right support member. Therefore, the front cover is configured not to rotate to the fourth position.

According to the above aspect, when the maintenance cover is opened, the rear surface of the front cover comes into contact with the front end portion of the maintenance cover during the rotation of the front cover, so that the front cover is prevented from closing. There is. Thereby, it is possible to prevent forgetting to close the maintenance cover. As a result, it is possible to prevent processing from being performed with the maintenance cover open.

According to another preferred aspect of the present invention, when the maintenance cover is closed, the front end portion of the maintenance cover is located behind the rear surface of the front cover when the front cover is in the fourth position. When the maintenance cover is open, the front end portion of the maintenance cover is arranged in front of the rear surface of the front cover when the front cover is in the fourth position.

According to the above aspect, when the maintenance cover is opened, the rear surface of the front cover comes into contact with the front end portion of the maintenance cover when the front cover rotates, so that the front cover rotates to the fourth position. Do not, that is, do not close. Thereby, it is possible to prevent forgetting to close the maintenance cover. As a result, it is possible to prevent processing from being performed with the maintenance cover open.

According to another preferred aspect of the present invention, the maintenance cover is formed in a rectangular shape in a side view, and the maintenance cover is arranged so as to form an acute angle with the front cover in a side view when in the closed state. Has been done.

According to the above aspect, as compared with the case where the maintenance cover is provided in parallel with the front cover, a portion of the tip of the maintenance cover that protrudes outward from the opening of the case when the maintenance cover rotates forward. Can be increased. Therefore, as compared with the case where the maintenance cover is provided in parallel with the front cover, the distance between the maintenance cover and the front cover can be reduced. As a result, the artificial tooth manufacturing device can be made compact.

According to another preferred aspect of the present invention, the cutting drive unit includes a spindle that grips an upper portion of the machining tool and rotates the machining tool around an axis.

According to the above aspect, the worker can easily access the spindle in the storage area. As a result, it is possible to easily inspect and replace the spindle without increasing the cost.

According to another preferred aspect of the present invention, the spindle is arranged behind the maintenance cover.

According to the above aspect, since the spindle is arranged at a position visible when the maintenance cover is opened, it is easy to inspect and replace the spindle.

ADVANTAGE OF THE INVENTION According to this invention, the artificial tooth preparation apparatus which can inspect and replace a cutting drive part easily can be provided at low cost.

It is a perspective view showing the artificial tooth manufacturing device concerning one embodiment of the present invention. It is a perspective view which shows the artificial tooth preparation apparatus in the state which opened the front cover of FIG. It is a perspective view showing the state where some members of the artificial tooth preparation device concerning one embodiment of the present invention were removed. It is the IV-IV sectional view taken on the line of FIG. It is sectional drawing which shows the state which opened the maintenance cover and front cover of FIG. FIG. 6 is a cross-sectional view showing a state in which the front cover of FIG. 5 is about to be closed.

Hereinafter, an artificial tooth preparation device according to an embodiment of the present invention will be described. As shown in FIG. 1, the mutually orthogonal axes are the X axis, the Y axis, and the Z axis, and the artificial tooth preparation device 1 according to the present embodiment is placed on a plane composed of the X axis and the Y axis. And Hereinafter, the left side and the right side are the left side and the right side when the artificial tooth preparation device 1 is viewed toward the front cover 7 in FIG. 1. Further, when the artificial tooth manufacturing apparatus 1 is viewed toward the front cover 7 in FIG. 1, the one that approaches the artificial tooth manufacturing apparatus 1 is the rear side and the one that moves away is the front side. In the figure, the left side is L, the right side is R, the front side is F, the rear side is Re, the upper side is U, and the lower side is D. However, these are merely directions for convenience of description, and do not limit the installation mode of the artificial tooth preparation device 1.

As shown in FIG. 1, the artificial tooth preparation device 1 of the present embodiment is formed in a box shape. Specifically, the artificial tooth manufacturing device 1 includes a case 10 having a base portion 2, a left outer wall portion 3, a right outer wall portion 4, a top surface portion 5 and a rear surface portion 6, and a front cover 7. The front of the case 10 is open. The left outer wall portion 3 extends upward at the left end of the base portion 2. The right outer wall portion 4 extends upward at the right end of the base portion 2. The rear surface portion 6 extends upward at the rear end of the base portion 2. The rear surface portion 6 is connected to the rear end of the left outer wall portion 3 and the rear end of the right outer wall portion 4. The top surface portion 5 is connected to the upper end of the left outer wall portion 3, the upper end of the right outer wall portion 4, and the upper end of the rear surface portion 6. An intake section 9 is provided between the front end of the top surface section 5 and the front cover 7. The intake section 9 includes a plate member 9a provided with a mesh-shaped intake port 9b extending in the left-right direction. The plate member 9a is, for example, a metal plate. The intake section 9 is connected to the front cover 7. A processing area 8 is formed by the base portion 2, the left outer wall portion 3, the right outer wall portion 4, the top surface portion 5, the rear surface portion 6, and the front cover 7. In the processing area 8, cutting is performed on a workpiece (not shown) which is a dental material. The front cover 7 is configured to be rotatable between a third position P3 (see FIG. 2) that opens the processing area 8 and a fourth position P4 that closes the processing area 8. Details will be described later.

As shown in FIG. 2, when the front cover 7 is open, the processing area 8 communicates with the external space. The front cover 7 is provided with a window 7a made of a transparent cover. The operator can visually recognize the processing area 8 from the window 7a. A dust collecting pipe 11 (see FIG. 4) connected to a dust collecting device (not shown) provided outside the artificial tooth manufacturing device 1 is connected to the rear surface portion 6 of the case 10. Due to the suction operation of the dust collector, the air outside the artificial tooth preparation device 1 is introduced into the processing area 8 through the intake port 9b and is guided to the dust collector through the dust collecting pipe 11. ing. As shown in FIG. 1, when the front cover 7 is closed, that is, when the processing area 8 does not communicate with the external space, the plate member 9a of the air intake portion 9 becomes substantially flush with the top surface portion 5, and The mouth 9b faces up and down. The mechanism for opening the front cover 7 will be described in detail later.

FIG. 3 shows the artificial tooth preparation device 1 with the left outer wall portion 3, the right outer wall portion 4, the top surface portion 5, the front cover 7, and the air intake portion 9 of FIG. 1 removed. As shown in FIG. 3, a partition wall 12 is provided to the right of the processing area 8 of the artificial tooth preparation device 1 perpendicularly to the base portion 2. In a space formed to the right of the processing area 8 by the partition wall 12, a drive unit for driving a holding unit 25 (see FIG. 4) of the workpiece 24, which will be described later, is arranged. In addition, as shown in FIG. 2, the space on the right side of the processing area 8 becomes a closed region by attaching the detachable cover 14.

A left inner wall portion 15 is provided on the right side of the left outer wall portion 3 (see FIG. 1). A right inner wall portion 16 is provided on the left side of the right outer wall portion 4 (see FIG. 1). As shown in FIG. 4, the base portion 2 is formed so as to descend and incline from the front to the rear. The rear surface portion 6 and the front cover 7 are arranged perpendicular to the base portion 2. Below the base portion 2, a horizontally formed lower surface portion 17 is provided. The front end of the base portion 2 and the front end of the lower surface portion 17 are connected by a connecting portion 18 which is substantially flush with the front cover 7. A vertically arranged rear wall portion 19 is provided at a rear portion of the lower surface portion 17. The upper end of the rear wall portion 19 is connected to the top surface portion 5. The upper end of the rear surface portion 6 is connected to the rear wall portion 19.

As shown in FIG. 4, a partition wall 20 extending forward substantially parallel to the base portion 2 is attached to the upper portion of the rear surface portion 6. The partition wall 20 is formed with a front end portion 20a that extends substantially vertically upward. A pair of left and right plate members 13 are vertically provided on the front end portion 20a of the partition wall 20. A maintenance cover 21 is provided in front of the plate member 13 so as to be rotatable forward. In a state where the maintenance cover 21 is arranged vertically (state of FIG. 4: hereinafter, may be referred to as a state where the maintenance cover is closed), the left portion of the maintenance cover 21 contacts the plate member 13 on the left side. The right portion of the maintenance cover 21 is in contact with the plate member 13 on the right side. As a result, the top surface portion 5, the rear wall portion 19, the rear surface portion 6, the partition wall 20, the plate member 13, and the maintenance cover 21 form a closed storage area 22. The storage area 22 is formed above the case 10. The storage area 22 is formed above the area of the processing area 8 in which the holding portion 25 is arranged. The maintenance cover 21 is formed in a rectangular shape in a side view. The maintenance cover 21 is arranged so as to form an acute angle with the front cover 7 in a side view when in the closed state. The position when the maintenance cover 21 is vertically arranged and is in the closed state is the first position P1, and the position when the front cover 7 is in the closed state is the fourth position P4.

The processing area 8 is provided with a holding part 25 that is formed in a semi-circular shape and holds the workpiece 24. The work piece 24 is formed in a disk shape. As shown in FIG. 4, the holding portion 25 includes an upper member 25a and a lower member 25b. The upper member 25a and the lower member 25b of the holding unit 25 hold the semi-circular portion from the front portion to the rear portion of the workpiece 24 in a sandwiched state. A rotary shaft 26 is connected to front portions of the upper member 25a and the lower member 25b of the holding portion 25. The rotary shaft 26 is connected to a drive unit 27 provided in front of the holding unit 25. The drive unit 27 is, for example, a motor. The drive unit 27 is arranged in front of the holding unit 25. The drive unit 27 rotates the rotary shaft 26 in the direction T1 around the axial direction D2 of the rotary shaft 26. A rotating shaft 28 is connected to the rear portions of the upper member 25a and the lower member 25b of the holding unit 25. In such a configuration, when the drive unit 27 rotates the rotating shaft 26 in the direction T1, the holding unit 25 rotates in the direction T1. Thereby, the workpiece 24 can be rotated in the direction T1.

Subsequently, the storage area 22 is provided with a cutting drive unit 23 that drives a processing tool 23f that cuts the workpiece 24. The cutting drive unit 23 includes a support base unit 23a, a support column 23b, a carriage 23c, a connecting unit 23d, a drive unit 23g (see FIG. 3), and a drive unit 23h. The carriage 23c includes a spindle 23e, a spindle motor (not shown), and a mechanism (not shown). The drive unit 23g and the drive unit 23h are, for example, motors. The support base portion 23a is provided on the partition wall 20. The support pillar 23b is provided substantially perpendicular to the support base portion 23a. The connecting portion 23d connects the support column 23b and the carriage 23c. The spindle 23e is connected to the lower end of the carriage 23c. The spindle 23e is arranged above the support base portion 23a. The processing tool 23f is formed in a shaft shape and is held at the lower end of the spindle 23e. The spindle 23e rotates the processing tool 23f around the axis of the processing tool 23f. The spindle 23e is arranged in front of the storage area 22 and behind the maintenance cover 21. The drive unit 23h moves the connecting unit 23d in the direction of the arrow D1, that is, in the direction perpendicular to the workpiece 24 in FIG. As a result, the processing tool 23f moves in the direction of the arrow D1. The processing tool 23f is configured to move from the storage area 22 to the processing area 8 through an insertion hole (not shown) which is vertically penetrated through the partition wall 20. At the time of cutting, the processing tool 23f is arranged in the processing area 8 via the insertion hole. The drive unit 23g (see FIG. 3) moves the spindle 23e in the left-right direction. As a result, the processing tool 23f moves in the left-right direction.

In the present embodiment, when the cutting drive unit 23 arranged in the storage area 22 is inspected or replaced, first, the front cover 7 is opened as shown in FIG. Here, as shown in FIG. 2, a thin plate-shaped left support member 30 is rotatably provided in a gap between the left outer wall portion 3 and the left inner wall portion 15 (see FIG. 3 ). Similarly, a thin plate-shaped right support member 31 is rotatably provided in a gap between the right outer wall portion 4 and the right inner wall portion 16 (see FIG. 3 ). The left support member 30 is connected to the left end of the front cover 7 via a rotating shaft 32. The right support member 31 is connected to the right end of the front cover 7 via a rotating shaft 33. Further, the rotary shaft 34 is connected to the left inner wall portion 15. The rotary shaft 34 extends in the left-right direction. A rotary shaft 35 is connected to the right inner wall portion 16. The rotary shaft 35 extends in the left-right direction. The left support member 30 is connected to the rotating shaft 34. The right support member 31 is connected to the rotating shaft 35. In such a configuration, as shown in FIG. 5, the operator moves the front cover 7 upward to open it. At this time, since the left support member 30 and the right support member 31 rotate in the direction of arrow D3, that is, the counterclockwise direction, the front cover 7 also rotates counterclockwise so as to draw an arc. Move up. With the rotation of the front cover 7, the plate member 9a of the intake portion 9 also rotates counterclockwise so as to draw an arc, so that the intake port 9b that was oriented in the vertical direction is oriented in the front-rear direction. ing. The position when the front cover 7 is in the open state is the third position P3.

Next, the maintenance cover 21 is rotated forward to open. As a result, the storage area 22 is opened. A stopper 40 made of rubber protruding in the left-right direction is provided on the front portion of the case 10. The maintenance cover 21 stops its rotation when it comes into contact with the stopper 40. When the maintenance cover 21 is in the open state, the front end portion 21a of the maintenance cover 21 projects forward from the position of the rear surface of the front cover 7 when the front cover 7 is in the closed state (see FIG. 4). .. The operator can perform operations such as inspection and replacement of the spindle 23e by inserting his/her hand into the opened storage area 22. When the above work is completed, the maintenance cover 21 is pivoted rearward to the closed state, and the front cover 7 is pivoted in the direction of arrow D4, that is, in the clockwise direction to close the front cover 7. To do. The position when the maintenance cover 21 is horizontally arranged and in the open state is referred to as a second position P2.

Here, the front cover 7 is not closed when the maintenance cover 21 is in the open state. As shown in FIG. 6, when the maintenance cover 21 is horizontally arranged and in the open state, as described above, the front end portion 21a of the maintenance cover 21 projects forward. As a result, the rear surface 7b of the front cover 7 contacts the tip 21a of the maintenance cover 21 while the left support member 30 and the right support member 31 are being rotated. Therefore, the front cover 7 does not rotate to the fourth position P4 when the front cover 7 is in the closed state. Therefore, the processing area 8 does not become a closed area.

As described above, according to this embodiment, the storage area 22 provided with the spindle 23e can be opened by rotating the maintenance cover 21 forward toward the second position P2. Thereby, the worker can easily access the storage area 22. As a result, it is possible to easily inspect and replace the spindle 23e without incurring cost and requesting a service person. In the conventional artificial tooth manufacturing device, the cover that covers the inside of the machine body is opened to access the cutting drive unit. Can also be accessed. This is not the case in this embodiment. Further, the storage area 22 can be partitioned from the processing area 8 by the maintenance cover 21 and the partition wall 20. This can prevent chips generated during cutting from entering the spindle 23e or the like.

Further, according to the present embodiment, when the front cover 7 is rotated when the maintenance cover 21 is in the second position P2, that is, when the front cover 7 is opened toward the front, the rear surface 7b of the front cover 7 is rotated. Contacts the tip 21a of the maintenance cover 21. Therefore, the front cover 7 does not rotate to the fourth position P4, that is, it does not close. Thereby, it is possible to prevent forgetting to close the maintenance cover 21. As a result, it is possible to prevent processing from being performed with the maintenance cover 21 open.

Further, according to the present embodiment, when the front cover 7 is rotated while the maintenance cover 21 is opened, the rear surface 7b of the front cover 7 comes into contact with the tip portion 21a of the maintenance cover 21. Therefore, the front cover 7 does not rotate to the fourth position P4 and does not close. Thereby, it is possible to prevent forgetting to close the maintenance cover 21. As a result, it is possible to prevent processing from being performed with the maintenance cover 21 open.

Further, according to the present embodiment, the maintenance cover 21 is arranged so as to form an acute angle with the front cover 7 in a side view when in the closed state. As a result, compared with the case where the maintenance cover 21 is provided in parallel with the front cover 7, when the maintenance cover 21 rotates forward, the tip end 21a of the maintenance cover 21 moves outward from the opening of the case 10. The protruding portion can be enlarged. Therefore, the distance between the maintenance cover 21 and the front cover 7 can be reduced as compared with the case where the maintenance cover 21 is provided in parallel with the front cover 7. As a result, the artificial tooth manufacturing device 1 can be made compact.

Further, according to the present embodiment, the spindle 23e is arranged in the storage area 22. The operator can easily access the spindle 23e in the storage area 22 by opening the maintenance cover 21. As a result, the spindle 23e can be easily inspected, replaced, and the like at low cost.

Further, according to the present embodiment, the spindle 23e is arranged behind the maintenance cover 21. As a result, since the spindle 23e is disposed at a position visible when the maintenance cover 21 is opened, the operator can easily inspect and replace the spindle 23e.

In the above embodiment, the front cover 7 is rotated to open and close, but the present invention is not limited to this. The front cover 7 may be slid in a predetermined direction to open and close.

Further, in the above-described embodiment, the maintenance cover 21 is arranged so as to form an acute angle with the front cover 7 in a side view in the closed state, but the present invention is not limited to this. The front cover 7 may be arranged such that the maintenance cover 21 and the front cover 7 in the closed state are parallel to each other.

Further, in the above-described embodiment, the spindle 23e is arranged in front of the storage area 22, but the present invention is not limited to this. The spindle 23e may be arranged in the storage area 22, for example, in the center or at the rear. In short, when the maintenance cover 21 is opened, it is desirable that the spindle 23e is arranged at a position where the operator can easily access the spindle 23e in the storage area 22.

Further, in the above-described embodiment, the holding unit 25 is moved three-dimensionally in the XYZ coordinate system, but the present invention is not limited to this. If the holding unit 25 can be moved three-dimensionally, a polar coordinate system or the like may be adopted.

The terms and expressions used herein are used for descriptive purposes and not for limiting interpretation. It should be appreciated that it is not intended to exclude any equivalents of the features shown and described herein, but to allow variations within the scope of the claimed invention. The present invention can be embodied in many different forms. This disclosure should be considered as providing embodiments of the principles of the present invention. Embodiments are described herein with the understanding that they are not intended to limit the invention to the preferred embodiments described and/or illustrated herein. It is not limited to the embodiments described herein. The present invention encompasses all embodiments including equivalent elements, modifications, deletions, combinations, improvements and/or changes that can be recognized by those skilled in the art based on this disclosure. The limitations of a claim should be construed broadly based on the terminology used in the claim, and should not be limited to the embodiments described herein or during the prosecution of the present application.

1 Artificial Tooth Maker 7 Front Cover 7b Rear Surface of Front Cover 8 Processing Area 10 Case 20 Partition Wall 21 Maintenance Cover 21a Maintenance Cover Tip 23 Cutting Drive 23e Spindle 23f Processing Tool 24 Workpiece 25 Holding 30 Left Support Member 31 Right support member P1 1st position P2 2nd position P3 3rd position P4 4th position

Claims (5)

An artificial tooth manufacturing device for cutting an object to manufacture an artificial tooth,
A case with an open front,
A front cover that is provided at the front of the case, is capable of opening and closing the opening, and that closes the opening to make the space behind the opening of the case a processing area.
A first left rotation shaft rotatably connected to an upper left portion of the case, and a second left rotation shaft connected to a left end portion of the front cover and rotatably supporting the front cover. A left support member,
A first right rotation shaft rotatably connected to an upper right portion of the case, and a second rotation shaft provided at a right end portion of the front cover and rotatably supporting the front cover together with the left support member. A right support member having a right rotation axis,
A holding portion which is provided in the processing area and holds the workpiece,
A partition wall provided in the case above the holding portion and having an insertion hole vertically penetrating therethrough;
A maintenance cover rotatably provided between a first position that forms a closed storage area together with the partition wall and a second position that opens the closed storage area;
A cutting drive provided in the storage area,
A machining tool connected to the cutting drive unit and arranged in the machining area through the insertion hole;
The front cover is configured to be rotatable between a third position that opens the opening of the case and a fourth position that closes the opening by the left support member and the right support member.
The front cover is configured to rotate from the third position to the fourth position without interfering with the maintenance cover when the maintenance cover is closed.
When the maintenance cover is opened forward, the rear surface of the front cover contacts the front end of the maintenance cover while the left support member and the right support member are rotating, The artificial tooth manufacturing device, wherein the front cover is configured not to rotate to the fourth position. When the maintenance cover is closed, the front end portion of the maintenance cover is arranged rearward of the rear surface of the front cover when the front cover is in the fourth position,
The front end portion of the maintenance cover is arranged in front of a rear surface of the front cover when the front cover is in the fourth position when the maintenance cover is in an opened state. 1. The artificial tooth preparation device according to 1. The maintenance cover is formed in a rectangular shape when viewed from the left and right ,
The artificial tooth preparation device according to claim 1 or 2, wherein the maintenance cover is arranged so as to form an acute angle with the front cover when viewed in the left-right direction in the closed state. The artificial tooth preparation device according to any one of claims 1 to 3, wherein the cutting drive unit includes a spindle that grips an upper portion of the processing tool and rotates the processing tool around an axis. The artificial tooth preparation device according to claim 4, wherein the spindle is arranged behind the maintenance cover.

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